<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <img src="./images/1.webp" alt="">
  <script>
    // 只要用到随机数，就写一个函数 n到m的随机数
   
        function sj(a,b){
          let x =Math.floor(Math.random()*(b-a+1)+a)
          return x
        }
        
        let img =document.querySelector('img')
    setInterval(function(){
      img.src=`./images/${sj(1,6)}.webp`
    },1000)


    // 1. 获取图片对象
    // 2. 随机得到序号
    // 3. 更换路径
  </script>
</body>

</html>